Post B2Jqmg2f75jeWTCkM4 by infosecdj@infosec.exchange
 (DIR) More posts by infosecdj@infosec.exchange
 (DIR) Post #B2JqmdZAJmx6qPOA6K by infosecdj@infosec.exchange
       2026-01-15T19:29:05Z
       
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       As I will be travelling starting tomorrow, I declare the #nakeddiefriday today.Instead of going deeper into one particular die, this will be several of them but one-pagers.This one is HV9911 by Supertex (now owned by Microchip). Those following me have probably seen the epic struggle with restoring a diving light; this one came from the LED driver chip in the light. Entirely undamaged, as far as I can tell. Of particular interest is an array of fuses in the top right corner.#electronics #reverseengineering #icre
       
 (DIR) Post #B2JqmezR1bYlGAgega by infosecdj@infosec.exchange
       2026-01-15T19:31:40Z
       
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       An unknown IC coming from an unlabeled 8-pin chip in a driver of a string of "fairy lights" coming form China obv. No text on the die to identify it. The exact function of this is also unknown; I suppose it is some kind of a timer to shut the lights off after some time.Notably, this is single metal layer, metal-gate CMOS process. Western companies moved on from large node metal gate processes quite a long time ago. As cheap as it gets, I suppose. The die measures 0.775mm on each side.
       
 (DIR) Post #B2Jqmg2f75jeWTCkM4 by infosecdj@infosec.exchange
       2026-01-15T19:44:11Z
       
       1 likes, 0 repeats
       
       And of course I overwrote the previous post with my edits. Oh well. Yet again, here is TMP80C49 by Toshiba. It is one of the 8048 family of MCUs by intel.Note the microcode ROM on the left side and the absence of any semblance of a datapath block by it. RAM and ROM blocks on the right side.Many thanks to @RueNahcMohr for providing this sample!
       
 (DIR) Post #B2Jqmh0ZWLepWHEajg by infosecdj@infosec.exchange
       2026-01-15T19:47:17Z
       
       1 likes, 1 repeats
       
       And finally, this. I have no idea what this is, except that it is Soviet and made using a metal-gate CMOS process. :-) There is two of *something* on the die, and it might be a dual JK flip-flop chip. Unfortunately, that's about as much as I know about it.